Bug#940220: postgresql-common: pg_ctlcluster segfault

I just deployed updates to a small fleet of mostly-identical machines and this issue (pg_ scripts enter a recursive loop and consume all available memory) happened on just one of them. Went through the usual remove & purge and reinstall and the issue persisted. Turned out that I had an old

Bug#940220: postgresql-common: pg_ctlcluster segfault

Package: postgresql-common Version: 206 Severity: important Dear Maintainer, Updates package take a long time with errors Setting up postgresql-common (206) ... Deep recursion on subroutine "PgCommon::get_versions" at /usr/share/perl5/PgCommon.pm line 706. Deep recursion on subroutine